'''
关于初始化，传参的坑

'''
class sds:
    def __init__(self,a,b):
        self.c=a+b
        print(self.c)
        self.ab(a,b)

    def ab(self,a,b):
        self.c=a-b
        print(self.c)
    def ac(a,b):
        print(a+b)
    def df(self,b):
        print(self+b)
    def dd(self,a,b):
        print(a+b)
# sds.ac(1,2)

# sds(7,2).ab(1,2)
# a=sds(1,2)
# a.ab(2,4)
# sds.df(2,3)
# sds(1,2).dd(4,5)
